CN214781679U - A gas purification system for powder coal gasification device of Ende furnace - Google Patents
A gas purification system for powder coal gasification device of Ende furnace Download PDFInfo
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- CN214781679U CN214781679U CN202120501056.0U CN202120501056U CN214781679U CN 214781679 U CN214781679 U CN 214781679U CN 202120501056 U CN202120501056 U CN 202120501056U CN 214781679 U CN214781679 U CN 214781679U
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- 239000003245 coal Substances 0.000 title claims abstract description 60
- 238000002309 gasification Methods 0.000 title claims abstract description 53
- 239000000843 powder Substances 0.000 title claims abstract description 26
- 238000000746 purification Methods 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 145
- 239000000428 dust Substances 0.000 claims abstract description 67
- 238000005773 Enders reaction Methods 0.000 claims abstract description 44
- 239000007921 spray Substances 0.000 claims abstract description 30
- 239000012716 precipitator Substances 0.000 claims abstract 3
- 239000012717 electrostatic precipitator Substances 0.000 claims abstract 2
- 239000007789 gas Substances 0.000 claims description 91
- 239000003034 coal gas Substances 0.000 claims description 77
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 14
- 229910052760 oxygen Inorganic materials 0.000 claims description 14
- 239000001301 oxygen Substances 0.000 claims description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 12
- 239000003546 flue gas Substances 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000001556 precipitation Methods 0.000 claims description 8
- 238000011010 flushing procedure Methods 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 5
- 239000012719 wet electrostatic precipitator Substances 0.000 claims 7
- 238000007789 sealing Methods 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000001035 drying Methods 0.000 claims 1
- 239000002893 slag Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 14
- 239000003795 chemical substances by application Substances 0.000 abstract description 11
- 238000005406 washing Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 15
- 239000000498 cooling water Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000011031 large-scale manufacturing process Methods 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
本实用新型涉及一种恩德炉粉煤气化装置的煤气净化系统，包括空气煤气换热器、空喷塔、文丘里水膜除尘器、煤气风机、湿式电除尘器、空气风机及循环水系统。本实用新型采用“水洗+文丘里+电除尘”的组合工艺，利用产品煤气的热量给恩德炉粉煤制气用的气化剂空气进行预热；煤气风机采用变频控制，兼顾了恩德炉粉煤气化装置在开工和正常生产两种状态下系统流量、压力的变化；本实用新型所述系统工艺流程简单，设备配置合理，运行稳定可靠，节能环保，适合粉煤气化工艺大型化、规模化生产。
The utility model relates to a gas purification system of an Ender furnace powder coal gasification device, which comprises an air gas heat exchanger, an air spray tower, a venturi water film dust collector, a gas fan, a wet electric precipitator, an air fan and a circulating water system. The utility model adopts the combined process of "water washing + Venturi + electrostatic precipitator", and utilizes the heat of the product gas to preheat the gasification agent air used for making gas from pulverized coal of the Ende furnace; Changes in system flow and pressure of the coal gasification device under two states of start-up and normal production; the system of the utility model has simple process flow, reasonable equipment configuration, stable and reliable operation, energy saving and environmental protection, and is suitable for large-scale and large-scale pulverized coal gasification process. Production.
Description
Technical Field
The utility model relates to a coal system gas technical field especially relates to an Ender stove powder coal gasification equipment's coal gas clean system.
Background
The coal resource of China is rich, the process technology of making gas with coal is various, wherein the coal gasification technology of Ender furnace powder takes low-quality pulverized coal as raw material, the coal gasification technology does not compete for coal sources with other coal industries such as coking industry and the like, the raw material can adopt brown coal, long flame coal, non-sticky coal or weakly sticky coal, the raw material is cheap, the cost of produced coal gas is low, the gas yield of a single furnace is large, the discharged coal gas contains more dust, almost no tar is contained, the temperature of the furnace outlet is high, the pressure is lower, and the produced product coal gas can be used as industrial fuel gas or other raw material gases such as synthetic ammonia.
The Chinese patent application with the publication number of CN1299859A discloses a fluidized bed pulverized coal gasification device and a process flow thereof, which only relates to an Ender furnace pulverized coal gasification device, and comprises a producer, a cyclone separator, a waste heat boiler and an economizer (a steam superheater and a soft water preheater), wherein the temperature of coal gas is reduced to 150-240 ℃ from 930-950 ℃ at a furnace outlet. It does not relate to how the coal gas after the economizer continues to be cooled, purified and conveyed, that is, the subsequent coal gas purification process and system are not described.
Chinese utility model patent No. CN101629108B discloses a "method for producing coal gas by gasifying pulverized coal", which uses a high-temperature hot-blast stove to burn a part of product coal gas, and uses the high-temperature flue gas obtained after burning to preheat the gasifying agent (air and steam) needed by the pulverized coal gasifier. Although the temperature of the gasification agent is increased, the conversion rate of coal is improved, the adaptability of the coal is stronger, the process flow is long, the operation is complex, and a part of product coal gas is consumed, thereby not only reducing the enterprise benefit, but also generating smoke gas due to combustion and polluting the environment.
The Chinese patent application with the publication number of CN107513436A discloses a novel high-temperature dust removal indirect cooling process system for pulverized coal gasification, which firstly filters and removes dust from coal gas through a metal film dust remover and then cools the coal gas in an indirect cooling mode. The technical scheme adopts a dry filtering mode, so that the system resistance is large, and filtered dry ash is easy to raise dust, is not easy to treat and is easy to form secondary pollution; an indirect cooling mode is adopted, the heat transfer coefficient is small, the heat exchanger is used for industrial production devices with large production scale, and the required heat exchange equipment has large volume and high manufacturing cost; in addition, coal dust impurities in the coal gas are easy to attach to the heat exchange tube, so that the heat transfer effect is influenced, and the long-term continuous and stable production is difficult.
Therefore, aiming at the limitations and the defects of the prior art, in order to greatly popularize the pulverized coal gasification gas-making process and perfect the whole process flow of the coal gasification device of the Ender furnace, the pulverized coal gasification gas-making process is suitable for large-scale and large-scale production, and a simple, economic, efficient and environment-friendly gas purification process must be found.
Disclosure of Invention
The utility model provides a coal gas purification system of an Ender furnace pulverized coal gasification device, which adopts a combined process of water washing, Venturi and electric dust removal and preheats the air of a gasifying agent for the Ender furnace pulverized coal gasification by utilizing the heat of product coal gas; the coal gas fan is controlled by frequency conversion, and the change of the system flow and the pressure of the Ender furnace powder coal gasification device under two states of start-up and normal production are considered; the utility model discloses process flow is simple, and equipment configuration is reasonable, and the operation is reliable and stable, and is energy-concerving and environment-protective, is fit for the large-scale, the large-scale production of fine coal gasification technology.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a coal gas purification system of an Ender furnace powder coal gasification device comprises an air coal gas heat exchanger, an air spray tower, a Venturi water film dust collector, a coal gas fan, a wet electric dust collector, an air fan and a circulating water system; the high-temperature coal gas inlet of the air coal gas heat exchanger is connected with the high-temperature coal gas outlet of the Ender furnace powder coal gasification device, the coal gas outlet of the air coal gas heat exchanger after heat exchange is connected with the coal gas inlet at the lower part of the air spray tower, and the upper part of the air spray tower is provided with a first water spray device; a coal gas outlet at the upper part of the air spray tower is connected with a coal gas inlet at the top of the Venturi water film dust collector, and a multi-stage water spraying device II is arranged at the upper part of the Venturi water film dust collector; a coal gas outlet at the lower part of the Venturi water film dust collector is connected with a coal gas inlet at the lower part of the wet electric dust collector through a coal gas conveying pipeline, and a coal gas fan is arranged on the coal gas conveying pipeline; the top of the wet electric dust collector is provided with a clean gas outlet; circulating water system passes through water supply line and connects water spray set one and water spray set two, connects the return water mouth of air shower bottom through return water pipe one, connects the return water mouth of venturi water film dust remover bottom through return water pipe two.
An air inlet of the air coal gas heat exchanger is communicated with the atmosphere through an air fan, and an air outlet after heat exchange is connected with a gasifying agent inlet of the Ender furnace.
And the first water return pipeline and the second water return pipeline are respectively provided with a water seal groove.
A coal gas purification system of an Ender furnace powder coal gasification device also comprises a chimney; the gas inlet at the bottom of the chimney is connected with a gas conveying pipeline at the downstream of the gas fan through a gas pipeline, a first valve is arranged on the gas conveying pipeline close to the wet electric dust collector, and a second valve is arranged on the gas pipeline.
A clean gas outlet of the wet electric dust collector is connected with a gas user or a gas tank through a gas outlet pipeline, and an oxygen content analyzer is arranged on the gas outlet pipeline; and the oxygen content analyzer and the power supply of the wet electric dust collector are controlled in an interlocking manner.
The circulating water system consists of a turbid circulating water tank, a turbid circulating water pump, a water cooling tower, a clean circulating water tank and a clean circulating water pump, wherein a filtering and deslagging device is arranged in the turbid circulating water tank, a clean water outlet of the turbid circulating water tank is connected with a circulating water inlet of the water cooling tower through the turbid circulating water pump, and a circulating water outlet of the water cooling tower is connected with the clean circulating water tank and is connected with a water supply pipeline through the clean circulating water pump.
The gas fan is controlled by frequency conversion.
The wet electric dust collector is provided with a precipitation electrode flushing device, and the water inlet end of the precipitation electrode flushing device is connected with a water supply pipeline of a circulating water system; the bottom of the wet electric dust collector is connected with a circulating water system through a third water return pipeline, and a water seal tank is arranged on the third water return pipeline.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the coal gas at the outlet of the economizer in the Ender furnace powder coal gasification device exchanges heat with the air of the gasifying agent of the Ender furnace before water cooling, so that the coal gas is cooled, the cooling water quantity is saved, the air is preheated, the reaction rate in the Ender furnace is accelerated due to the increase of the temperature of the gasifying agent, the gasification strength and the carbon conversion rate are improved, and the production cost is reduced;
2) the high-temperature coal gas is directly cooled by the air injection tower, so that the cooling efficiency is high, the operation is stable and reliable, and the coal gas can be dedusted and purified while being cooled;
3) the coal gas fan controlled by frequency conversion is arranged on the coal gas conveying pipeline behind the air spray tower and the Venturi water film dust remover, the load adjusting range is large, and the machine has two functions, namely conveying coal gas during normal production and pumping flue gas during start-up;
4) a wet electric dust collector is adopted, and high-voltage electric fields are utilized to remove tiny particle dust carried in the coal gas, so that the dust removal efficiency is high; the precipitation pole of the electric dust collector adopts continuous washing water, so that the dust is effectively prevented from being deposited, and the operation is stable and reliable; an oxygen content analyzer is arranged on a coal gas outlet pipeline of the wet electric dust remover and is safely interlocked with the wet electric dust remover, so that the safety of equipment is ensured;
5) the process flow is short, the operation is simple, and the method is suitable for large-scale and large-scale production of the pulverized coal gasification process.
Drawings
Fig. 1 is a schematic structural diagram of a gas purification system of an ende furnace powder coal gasification device of the present invention.
In the figure: 1. air gas heat exchanger 2, air spray tower 3, venturi water film dust remover 4, gas fan 5, wet electric dust remover 6, chimney 7, water seal tank 8, air fan 9, oxygen content analyzer 10, valve one 11, valve two 12, circulating water system 13, Ender furnace powder coal gasification device
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in fig. 1, the gas purification system of the ender furnace powder coal gasification device of the present invention comprises an air gas heat exchanger 1, an air spray tower 2, a venturi water film dust collector 3, a gas fan 4, a wet electric dust collector 5, an air fan 8 and a circulating water system 12; the high-temperature coal gas inlet of the air coal gas heat exchanger 1 is connected with the high-temperature coal gas outlet of the Ender furnace powder coal gasification device 13, the coal gas outlet of the air coal gas heat exchanger 1 after heat exchange is connected with the coal gas inlet at the lower part of the air spray tower 2, and the upper part of the air spray tower 2 is provided with a first water spray device; a coal gas outlet at the upper part of the air spray tower 2 is connected with a coal gas inlet at the top of the Venturi water film dust collector 3, and a multi-stage water spraying device II is arranged at the upper part of the Venturi water film dust collector 3; a coal gas outlet at the lower part of the Venturi water film dust collector 3 is connected with a coal gas inlet at the lower part of the wet electric dust collector 5 through a coal gas conveying pipeline, and a coal gas fan 4 is arranged on the coal gas conveying pipeline; the top of the wet electric dust collector 5 is provided with a purified gas outlet; and the circulating water system 12 is connected with a first water spraying device and a second water spraying device through a water supply pipeline, is connected with a water return port at the bottom of the air spray tower 2 through a water return pipeline, and is connected with a water return port at the bottom of the venturi water film dust collector 3 through a water return pipeline.
An air inlet of the air coal gas heat exchanger 1 is communicated with the atmosphere through an air fan 8, and an air outlet after heat exchange is connected with a gasifying agent inlet of the Ender furnace.
And the first water return pipeline and the second water return pipeline are respectively provided with a water seal tank 7.
A coal gas purification system of an Ender furnace powder coal gasification device also comprises a chimney 6; and a flue gas inlet at the bottom of the chimney 6 is connected with a coal gas conveying pipeline at the downstream of the coal gas fan 4 through a flue gas pipeline, a first valve 10 is arranged on the coal gas conveying pipeline close to the wet electric dust collector 5, and a second valve 11 is arranged on the flue gas pipeline.
A clean gas outlet of the wet electric dust collector 5 is connected with a gas user or a gas tank through a gas outlet pipeline, and an oxygen content analyzer 9 is arranged on the gas outlet pipeline; the oxygen content analyzer 9 and the power supply of the wet electric dust collector 5 are controlled in an interlocking way.
The circulating water system 12 is composed of a turbid circulating water tank, a turbid circulating water pump, a water cooling tower, a clean circulating water tank and a clean circulating water pump, wherein a filtering and deslagging device is arranged in the turbid circulating water tank, a clean water outlet of the turbid circulating water tank is connected with a circulating water inlet of the water cooling tower through the turbid circulating water pump, and a circulating water outlet of the water cooling tower is connected with the clean circulating water tank and is connected with a water supply pipeline through the clean circulating water pump.
The gas fan 4 is controlled by frequency conversion.
The wet electric dust collector 5 is provided with a precipitation electrode flushing device, and the water inlet end of the precipitation electrode flushing device is connected with a water supply pipeline of the circulating water system 12; the bottom of the wet electric dust collector 5 is connected with a circulating water system through a third water return pipeline, and a water seal groove is formed in the third water return pipeline.
The utility model relates to an Ender stove powder coal gasification equipment's coal gas clean system's process as follows:
1) high-temperature coal gas from an Ender furnace powder coal gasification device 13 enters an air coal gas heat exchanger 1 to exchange heat with air conveyed by an air fan 8, and the heated air flows out of the air coal gas heat exchanger 1 and enters the bottom of the Ender furnace together with external steam to be used as a gasification agent for preparing coal gas;
2) the coal gas which is subjected to heat exchange and temperature reduction through the air-coal gas heat exchanger 1 enters from the lower part of the air spray tower 2 and moves upwards, and is cooled by circulating cooling water sprayed from top to bottom, the circulating cooling water is in countercurrent contact with the coal gas to remove most of dust in the coal gas, and meanwhile, the coal gas flows out from a coal gas outlet at the upper part of the air spray tower 2 after the temperature of the coal gas is reduced to 60-70 ℃;
3) the coal gas from the air spray tower 2 enters from the top of the Venturi water film dust remover 3 and moves downwards, is cooled to about 35 ℃ by circulating cooling water sprayed from top to bottom, further removes dust at the same time, and then flows out from a coal gas outlet at the lower part of the Venturi water film dust remover 3;
4) during normal production, the first valve 10 is in an open state, and the second valve 11 is in a closed state; after being pressurized by a gas fan 4, the gas from the Venturi water film dust collector 3 enters from the lower part of the wet electric dust collector 5 and moves upwards, the dust in the gas is further removed under the action of a high-voltage electric field, and the cooled and purified gas is discharged from a clean gas outlet at the top of the wet electric dust collector 5 and is sent to a gas user or sent to a gas cabinet for storage; in the wet electric dust collector 5, circulating water is introduced to continuously wash the precipitation electrode;
5) the oxygen content analyzer 9 carries out on-line monitoring on the clean gas flowing out of the wet electric dust collector 5, automatically alarms when the oxygen content in the clean gas reaches a set alarm limit value, and automatically cuts off the power supply of the wet electric dust collector 5 when the oxygen content in the clean gas reaches a set cut-off limit value;
6) circulating water discharged by the air spray tower 2, the venturi water film dust collector 3 and the wet electric dust collector 5 flows to a circulating water tank of a circulating water system 12 through corresponding water seal grooves 7, is filtered and deslagged, is pumped to a water cooling tower by a circulating water pump for cooling, and is finally sent back to the air spray tower 2, the venturi water film dust collector 3 and the wet electric dust collector 5 for recycling;
7) during the start-up period of the Ender furnace powder coal gasification device 13, the first valve 10 is closed, the second valve 11 is opened, and the flue gas generated by the Ender furnace powder coal gasification device 13 is subjected to multi-stage cooling and dust removal purification through the air gas heat exchanger 1, the air spray tower 2 and the Venturi water film dust remover 3, and then is pumped to the chimney 6 by the gas fan 4 to be discharged to the atmosphere at high altitude.
The Ender furnace powder coal gasification device 13 consists of an Ender furnace, a cyclone separator, a waste heat boiler and an economizer, wherein the Ender furnace, the cyclone separator, the waste heat boiler and the economizer are sequentially connected through pipelines. The gas produced by the Ender furnace powder coal gasification device is generator gas prepared by taking air and steam as gasification agents or semi-water gas prepared by taking oxygen-enriched air and steam as gasification agents, the gas explosion limit is wide, and particularly the upper limit of the explosion limit is more than 70%. During normal production, the gas purification system must be operated at positive pressure, not allowing outside air to leak into the gas system, in order to avoid the formation of explosive mixtures. Therefore, the gas purification system not only considers reasonable purification efficiency and cooling efficiency, but also considers the resistance of the system.
The utility model provides a gas fan 4's motor adopts inverter motor, changes the flow of carrying the medium through the frequency that changes the motor to the change of the flue gas that adapts to the production of Ender stove powder coal gasification equipment 13 during the time of starting work and normal production and gas flow. By arranging the gas fan 4, the defect of low gas pressure at the outlet of the Ender furnace can be made up during the normal production of the Ender furnace powder coal gasification device 13, the resistance of the system is overcome, the whole gas purification system is ensured to operate under the positive pressure condition, the safety of the system is ensured, and the pressure requirement of subsequent users on gas delivery is met. During the start-up period of the Ender furnace powder coal gasification device 13, the device can be used for pumping the flue gas generated by the Ender furnace, meets the requirement of the Ender furnace on starting the Ender furnace, forms micro negative pressure in a hearth and creates conditions for forming fluidization of materials in the gasification furnace. The flue gas during the start-up period is cooled and purified by the washing of the air spray tower 2 and the Venturi water film dust collector 3, and the environmental protection requirement is met.
The wet electric dust collector 5 adopts a honeycomb tube wet electric dust collector or a tubular wet electric dust collector. The content of the impurities in the clean gas at the outlet of the wet electric dust collector 5 is relatively low, and the oxygen content analyzer 9 is arranged at the position, so that the online monitoring and the interlocking control are not influenced, and the long-term stable work of the oxygen content analyzer 9 is facilitated.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (8)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112899037A (en) * | 2021-03-09 | 2021-06-04 | 中冶焦耐(大连)工程技术有限公司 | Coal gas purification system and process of Ender furnace powder coal gasification device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112899037A (en) * | 2021-03-09 | 2021-06-04 | 中冶焦耐(大连)工程技术有限公司 | Coal gas purification system and process of Ender furnace powder coal gasification device |
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